Fr. Z has rumors, confirmations and educated guesses.
That SMS is the third confirmation I have gotten. So, I feel safer about saying what I am piecing together. Remember: this is based reliable sources but it is still supposition on my part. I sift the exaggerated stuff out and try to get a consistent picture. In no special order…
1) The document will definitely be a Motu Proprio. (That means it will be from the Pope and not a document of a Congregation or joint document issued by different dicasteries.)
2) At the beginning of November it was in its final draft, after four revisions.
3) During the third week of November it was suggested that the document might come out in about three weeks. This would put it around… well… now.